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(a) If you have no preliminary estimate for p, how many medical files should you include in a random sample in order to be 85% sure that the point estimate p will be within a distance of 0.03 from p? Find the critical value for 85% confidence level, z0.85, and find the specified maximal error of estimate, E. (Round your answers to two decimal places.) Compute the sample size n for estimating the proportion p of all people who have blood type B under these restrictions. (Round your answer up to the nearest whole number.) medical files (b) Answer part (a) if you use the preliminary estimate that about 8 out of 90 people have blood type B. (Round your proportions to three decimal places and your sample size up to the nearest whole number.) 1-p = medical files

(a) If you have no preliminary estimate for p, how many medical files should you include in a random sample in order to be 85% sure that the point estimate p will be within a distance of 0.03 from p? Find the critical value for 85% confidence level, z0.85, and find the specified maximal error of estimate, E. (Round your answers to two decimal places.) Compute the sample size n for estimating the proportion p of all people who have blood type B under these restrictions. (Round your answer up to the nearest whole number.) medical files (b) Answer part (a) if you use the preliminary estimate that about 8 out of 90 people have blood type B. (Round your proportions to three decimal places and your sample size up to the nearest whole number.) 1-p = medical files

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. A random sample of medical files is used to estimate the proportion p of all people who have blood type B. A USE SALT (a) If you have no preliminary estimate for p, how many medical files should you include in a random sample in order to be 85% sure that the point estimate p will be within a distance of 0.03 from p? Find the critical value for 85% confidence level, zo.85, and find the specified maximal error of estimate, E. (Round your answers to two decimal places.) Z0.85 Compute the sample size n for estimating the proportion p of all people who have blood type B under these restrictions. (Round your answer up to the nearest whole number.) medical files (b) Answer part (a) if you use the preliminary estimate that about 8 out of 90 people have blood type B. (Round your proportions to three decimal places and your sample size up to the nearest whole number.) 1-p = medical files
Transcribed Image Text:For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. A random sample of medical files is used to estimate the proportion p of all people who have blood type B. A USE SALT (a) If you have no preliminary estimate for p, how many medical files should you include in a random sample in order to be 85% sure that the point estimate p will be within a distance of 0.03 from p? Find the critical value for 85% confidence level, zo.85, and find the specified maximal error of estimate, E. (Round your answers to two decimal places.) Z0.85 Compute the sample size n for estimating the proportion p of all people who have blood type B under these restrictions. (Round your answer up to the nearest whole number.) medical files (b) Answer part (a) if you use the preliminary estimate that about 8 out of 90 people have blood type B. (Round your proportions to three decimal places and your sample size up to the nearest whole number.) 1-p = medical files
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